An office building has 23 offices. the floor area of each office is 305  square feet. which shows the equation you can use to find the floor area, n n , of all the offices and the value of n n ? a. 23 + 305 = n , n = 810 square feet 23+305=n, n= 810 square feet b. 23 × 305 = n , n = 1 , 405 square feet 23×305=n, n=1,405 square feet c. 23 × 305 = n , n = 1 , 425 square feet 23×305=n, n=1,425 square feet d. 23 × 305 = n , n = 7 , 015 square feet 23×305=n, n= 7,015 square feet